19116740 has 24 divisors (see below), whose sum is σ = 40228440. Its totient is φ = 7630848.

The previous prime is 19116737. The next prime is 19116761. The reversal of 19116740 is 4761191.

It can be written as a sum of positive squares in 4 ways, for example, as 4631104 + 14485636 = 2152^2 + 3806^2 .

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16004 + ... + 17156.

It is an arithmetic number, because the mean of its divisors is an integer number (1676185).

Almost surely, 2^19116740 is an apocalyptic number.

19116740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19116740 is an abundant number, since it is smaller than the sum of its proper divisors (21111700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19116740 is a wasteful number, since it uses less digits than its factorization.

19116740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 19116740 is about 4372.2694336008. The cubic root of 19116740 is about 267.3855567751.

The spelling of 19116740 in words is "nineteen million, one hundred sixteen thousand, seven hundred forty".